Window construction.



G. H. FORSYTH.

WINDOW CONSTRUCTION.

AIPLIOATIUN FILED AUG. 12, 1907.

1,63,346, Patented June 3, 1913.

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GEORGE E. FORSYTH, OF CHICAGO, ILLINOIS.

WINDOW CONSTRUCTION.

To all whom it may concern:

Be it known that I, GEORGE H. Fonsr'rn, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Window Constructions, of which the following is a specification.

This invention relates in general to window constructions, and has reference more particularly to a construction employing, in combination with a suitable guide, one-or more closures for the window opening; which closure or closures, within the pur-' view of the invention, may consist of one or a plurality of plates of glass, or of a glass plate in association with a shutter or ourtain, whether of metal or other material, or., of one or more shutters adapted to be employed as a closure and air guard to the opening for any purpose or purposes.

In respect to the main novel features of the invention, these may be said to consist in part of a novel construction of closure employing one or more frameless plates adapted to increase the extent of sightopeniiig as compared with a regular window sash, in part of elastic or resilient means whereby one or more of the plates is made to engage the guide, and means whereby two or more of the plates may be normally and elastically spaced and held apart.

My invention also comprises novel means providing for an automatic edgewise adjustment of the plates in their guides, as likewise a novel construction of telescoping closure. I

The invention will be readily understood when considered in connection with the accompanying drawings, which show approved mechanical forms of the several features of the invention, and in which,-

Figure 1.is a horizontal section on the line 11 of Fig. 2, showing a telescoping form of sash employing twin frameless plates in both the upper and lower sections thereof. Fig. 2 is a vertical sectional view substantially on the line 22 of Fig. 1. Fig. 3 is a horizontal section through one margin of the plates and their guide, illustrating means employed in association with the guide for automatically spacing the plates, maintaining a snug fit of the latter in the guide, and automatically adjusting the plates edgewise relatively to the guide. Fig. 4 is a view similar to Fig. 3, showing a construction wherein the spacing Specification of Letters Patent. Application filed August 12, 1907.

and automatic- Patented Juno 3, 1 91 3. Serial No. 388,180.

adjusting means are carried by the margin of the plates. Fig.5 is a View similar to Figs. 3 and 4, showing in cross-section upper and lower double plate sashes, with elastic sheet metal devices for both spacing the plates and maintaining a snug sliding fit of the sash in the guides; said figure also showmg a form of sure, as likewise means for adjusting the plates edgewise. Fig. 6 is a detail of a compound bent sheet metal plateholder such as shown in the lower half of Fig. 5. Fig. 7 is a fragmentary view of a plate such as may be employed in my invention to form one or both of the closures, said plate having a novel form of margin first to Figs. 1 and 2, 10 desigframe, and 11 designates each of guide-strips secured thereto, and together constituting the guide fort-he sash or other closure of the window opening. The free margins of these guide-strips are outwardly flared asshown at ll and said guide-strips are adapted to receive the marginal portions of a pair of frameless plates 12 which, in the present instance, constitute the upper section of a telescoping double plate closure. The margins of said plates have inwardly turned flaring or inclined portions 12 adapted for sliding-contact with the flaring margins 11 of the guide-strips. Secured to the jamb-post 10 below the guide-strips 11 are a similar pair of narrower guide-strips 13 having similar flaring margins 13*, which guide-strips side walls of a smgle channel-shaped-strip suitably secured to the jambpost. The lower guide'strips 13 are engaged by a pair of. lower frameless plates 14 having inwardly turned or inclined marginal portions 14' slidingly engaging the outwardly flared margins 18 of the guide-strips. One or more springs 15 interposed between the margins of the plates 14 operate to maintain the latter in snug sliding engagement with its guides; and similarly, one or more springs 16 likewise expand the plates 12 v against their cooperating guide-strips 11.

The lower margins of the upper plates 12 have inwardly turned projections 12*, and the upper margins of the lower plates 14 have similar outwardly turned projections 14 which projections form cooperating bentmetal strip adapted to grip the marg ns of the plates under presstrip requiring to be A fastened to the plate only at its ends.

Referring 'nates a section of a jamb-post of a window a pair of may" conveniently constitute the i stops to prevent separation of the upper and lower series of plates, while permitting free sliding or telescoping movement of the plates 14 within the plates 12.

Secured to one of the plates 14 is a suitable lift 17 which, where the plate is made of metal, may conveniently be formed by cutting and bending outwardly a tongue from the metal of the plate; the opening 17 thereby formed being closed by a cover 18 secured to the other side of the plate over said opening. The lower margins of the plates 14 are adapted to abut against a slll member indicated at 19, and are separated as shown at 14 to permit the, escape of dust and dirt therebetween, or, said plates may be connected at their lower edges and provided with sufiicient openings or apertures for the same purpose. In operation, the lower section 14 of the sash or other closure is raised in its guides 13 until the lift 17 strikes the lower edge of the upper section 12, whereupon the latter section, with the lower section telescoped therein, is raised in its guides 11. I

Figs. 3, 4 and 5 illustrate a variety of devices which may be employed for the purpose of securing a snug sliding fit of one or both of the plates with their respective guides, as likewise for effecting an automatic edgewise adjustment of the plate or lates in their guides; and it should be un derstood that these devices are applicable to any closure employing a plate or a pair of separated or spaced plates, and, when used with a telescoping construction as shown in Figs. 1 and 2, may be applied to either or both of the upper or lower sections. Re ferring to Fig. 3, 14 may designate parallel plates, the same having their marginal portions bent inwardly at an oblique angle to the plates as shown at 14.' The guide-strips 20 which are secured to the jamb-post 10 are bent inwardly at their free margins parallel with the strips, as shown at20 and constitute the immediate guiding and contacting parts engaging the outer surfaces of the plates 14.v V1thin the hollow guide formed by and between the guide-strips 20 is located a W- shaped adjusting strip 21, the outer parallel sides of which are guided between the strips.

20 and their inwardly turned margins 20*"; while the intermediate V-shaped portion of said adjusting strip engages the oblique margins 14 of the plates' The strip 21 is normally pressed outwardly or into engagement with the margins of the plates 14 by one or more springs 22 interposed between the jamb-post 10 and a triangular 23 lying behind the apex or V-shaped central part of the adjusting strip. It will be" observed that by reason of this construction the adjusting strip not only maintains a snu marginal fit with the plates 14, but also ten s to spread the latter into snug sliding filling strip engagement with the inwardly turnedjmar gms 20 of the guides 20;

In the form of the invention illustrated in Fig. 4, the means for spreading or distending the plates and effecting a snug sliding fit of the sash in its guide are carried by the lates 14. In this figure 24 designates a substantially M-shaped guide-strip that may be conveniently bentto shape from a strip of sheet metal, and that is secured at itsopposite edges to the jamb-post 10. The outer surface of this guide is herein shown as covered by a sheath or coating of non-corrosive metal or other material indicated at 25. The

adjacent margins of the plates 14 are enaged by a sheet metal stile member that may e formed from a strip of' sheet metal bent I lon itudinally to provide a central or intermediate bow spring 26, on either side of which is a channel-shaped portion 27 adapt- 35 ed to receive and grip'under' tension the margins of the plates; While outside of said channel-shaped portions are formed side walls 28, the marginal portions of which are bent inwardly obliquely, as shown at 28 and slidingly engage the inclined walls of the central or intermediate V-shaped portion of the guide. In this construction the bow spring 26 normally operates to spreador distend the plates 14, holding them spaced or separated at a proper interval; .while the side walls 28, through their transverse resiliency, engage the inclined walls of the guide under pressure, thus producing a snug sliding fit with the guide. Furthermore, the

inclination of the contacting parts of the stile and guide, under the transverse resiliency of the former, permits automatic edgewise adjustment of the plates between the opposite vertical guides in which thev 05 are mounted;

In Fig. 5 Ihave shown/in part a pair'of sash members, one of which may be assumed to represent an upper sash member and the other an offset lower sash member engaged 0 with their respective guides on the jambpost; and in connection therewith I have shown modified forms of bent sheet metal finishing strips or stile members for the plates which also embody therein means for separating -or spacing the plates. In this View, 29 designates a U-shaped'guide secured to the jamb-post 10, which guide may be assumed to represent the guide of the upper sash, the two plates of which are designated at 14; while 30 designates a W-shaped guide likewise secured to the jamb-post 10 and engaged by the marginal or. finishing strips or stiles of a lower sash member, the two plates of which are designated by 14 and 14. Between the guides 29 and 30 is a part- 7 ing strip 31. The guidesin both instances are herein shown as provided with a coating or sheathing 25 of non-corrosive material, as in Fig. 4. The margins of the plates 14 are overlapped on both sides by a pair of bent metal finishing strips 32 which may conveniently be secured thereto by punching or offsetting parts of the metal thereof shown at 32. into holes 33 formed through the plates.

34 represents a bow spring interposed between the plates with its margins co1iveniently connected to the inwardly offset margins of the finishing strips 32 as by-rivets 35.

The plates lt and 14: are equipped with a one-piece or integral marginal member or stile that, like the construction shown in Fig. 4, embodies in itself the means for gripping the plates, the guide-engaging means, and the means for separating or spacing the plates. This member, which is shown in isolated detail in Fig. 6, comprises essentially a pair of W-shaped members 36, the adjacent limbs of which are connected by an integral rentrant and trans versely elastic loop 37. The reentrant central portions 36 of the members 36 are made somewhat contracted at their open ends, as shown in Fig. 6, so as to grip the plates 14 and 14 under considerable pressure, and are secured to the plates preferably by inwardly punched portions entering the apertures in the plate, as described in connect-ion with the members 32, while the outer side portions" of the members 36 are normally outwardly divergent so as to be compressed between the walls of the guide 30 when inserted therein and produce a snug sliding fit therewith. The two limbs of the reentrant loop 37 similarly engage under transverse pressure the intermediate parting strip 30 of thedouble guide 30. In order to effect automatic edgewise adjustment of the plates lat and 145, I employa pair of hollow sheet metal strips 38 that lie between and are secured to the outer sidemembers of the W- shaped portions of the finishing strip and through pin-and-slot connections indicated at 39 permitting the horizontal play of the strips 38. Said strips are normally pressed outwardly into engagement with the transverse walls of the guide through compression springs 40 interposed between the inner edge of the adjusting strips and the transverse members of the rentrant portions 36.

In Fig. 7 I have shown what I believe to be a novel form of finishing strip, such as 32, designed to maintain a snug fit of such strip on the edge of the plate throughout its entire length, with only a single fastening necessary at either end. This is secured by bowing the strip between its upper and lower ends so as to cause the transverse member of the strip to present a slightly convex longitudinal surface to the edge of the plate, and then forcing the outwardly bent ends of the strip inwardly upon the edge of-the plate and securing the same as by pins or rivets at each end to the plate.

I claim:

1. A sheet-metal window sash bent to pro-' vide a pair of parallel grooves having resilient walls for the accommodation ofapair of plates. said sash having a portion between the plates forming parts of said grooves and acting to resiliently maintain the plates in pro-per spaced relation, substantially as described.

2. A sheet metal window sash having walls bent to provide a pair of parallel grooves for the accommodation of a pair of plates, said sash having a portion between the plates forming part of said grooves and acting to resiliently maintain the plates in proper spaced relation, the sash when disengaged from its guide groove being wider than said groove, and thereby maintaining spring engagement with the sides of said groove when engaged with the same, substantially as described.

3. A sheet metal window sash having walls bent to provide a pair of grooves and having flexible spring engagement with a pair of plates, said sash having a portion between the plates which forms part of the walls of said grooves and acts to maintain the plates in proper spaced relation, substant-ially as described.

4:. A metal window sash having walls! bent to provide parallel grooves for the accommodation of a pair of plates and resilient means disposed between said grooves for maintaining said sash walls in lateral engagement with the walls of the sash guide, substantially as described.-

v GEORGE H. FORSYTH.

Witnesses:

SAMUEL N. POND, F REDERICK C. GOODWlN. 

